Cancer of the liver, esophagus, and nasopharynx

I Opening Presentation.- Selenium as a Possible Chemopreventive Agent Against Cancer.- II Cancer of the Liver.- Epidemiology of Primary Liver Carcinoma.- Epidemiology of Primary Liver Cancer in a West German Population: The Saarland.- Risk Factors of Primary Liver Cancer in the High Prevalence Area Chongming County Results from a 5-Year Follow-up.- Cytopathology and Pathogenesis of Primary Liver Tumors.- Proliferation and Clonal Selection in Hepatocarcinogenesis.- Oncogenes in Primary Hepatic Cancer.- Hepatitis B Virus Sequences and Their Expression in Human Hepatoma Cells.- Subclinical Hepatocellular Carcinoma.- Effects of 13 Mutagens on Rat Hepatic Microsomal Enzymes.- Four Hundred Cases of Hepatic Resection for Primary Liver Cancer.- III. Cancer of the Esophagus.- Epidemiology of Esophageal Cancer in China.- Cancer of the Esophagus in Migrants from Different Areas in China.- Cocarcinogens of the Diterpene Ester Type as Principal Risk Factors of Cancer in Curacao and Possibly in South China: Identification of Second Order Risk Factors of Cancer in Multifactorial Carcinogenesis.- A Survey of the Familial Aggregation of Esophageal Cancer in Yangcheng County, Shanxi Province.- Chemical Factors in the Pathogenesis of Esophageal Carcinoma.- Vitamin Intervention in Precancerous Lesions of the Esophagus in a High-Risk Population of China.- Effect of N-Nitrosamine on Human Esophageal Epithelium Collected from Populations from a High-Risk Area for Esophageal Cancer in Northern China.- Papillomavirus Infections in Esophageal Cancer.- Experience with Combined Preoperative Irradiation and Surgery for Squamous-Cell Carcinoma of the Esophagus.- A Study of Tumor-Associated Antigens.- IV Cancer of the Nasopharynx.- Epidemiology of Nasopharyngeal Carcinoma with Special Reference to Early Detection and Pre-NPC Conditions.- Histopathological Aspects of Nasopharyngeal Carcinoma.- Prospective Study of Serum VCA-IGA Antibody in the Normal Population in Guangdong Province of China.- Prospective Studies on Nasopharyngeal Carcinoma and Epstein-Barr Virus Inducers.- Control of Epstein-Barr Virus-Related Disease.- The Role of Epstein-Barr Virus in Nasopharyngeal Carcinoma.- The Role of Promotion in the Carcinogenesis of Nasopharyngeal Carcinoma.- Clinical Course and Therapy of Nasopharyngeal Carcinoma.